<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录">
      <van-icon slot="left" name="cross" @click="$router.back()"></van-icon>
    </van-nav-bar>

    <!-- 登录表单 -->
    <van-form ref="loginFromRef" @submit="onSubmit">
      <van-field
        :rules="userFromRules.mobile"
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
        type="number"
        maxlength="11"
      >
        <i slot="left-icon" class="toutiao toutiao-shouji"></i>
      </van-field>
      <van-field
        :rules="userFromRules.code"
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        type="number"
        maxlength="6"
      >
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i>
        <template #button>
          <van-count-down
            v-if="isCountDownShow"
            @finish="isCountDownShow = false"
            :time="1000 * 60"
            format="ss s"
          />
          <van-button
            v-else
            @click="onSendSms"
            native-type="button"
            class="send-sms-btn"
            round
            size="small"
            type="default"
            >发送验证码</van-button
          >
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit"
          >登录</van-button
        >
      </div>
    </van-form>
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'

export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data() {
    return {
      user: {
        mobile: '',
        code: '',
      },
      userFromRules: {
        mobile: [
          { required: true, message: '手机号不能为空' },
          { pattern: /^1[3|5|7|8]\d{9}$/, message: '手机号格式错误' },
        ],
        code: [
          { required: true, message: '验证码不能为空' },
          { pattern: /^\d{6}$/, message: '验证码格式错误' },
        ],
      },
      isCountDownShow: false,
    }
  },
  computed: {},
  watch: {},
  created() {},
  mounted() {},
  methods: {
    async onSubmit() {
      // 获取表单数据
      const user = this.user
      // 表单验证
      // 提交表单请求登录

      this.$toast.loading({
        message: '登录中...',
        forbidClick: true,
        duration: 0,
      })
      try {
        const { data } = await login(user)
        // console.log(data)
        this.$store.commit('setUser', data.data)
        this.$toast.success('登录成功')
        // 登录成功跳转到主页
        this.$router.back()
      } catch (err) {
        if (err.response.status === 400) {
          this.$toast.fail('手机号或验证码错误')
        } else {
          this.$toast.fail('登录失败，请稍后再试')
        }
      }
    },
    // 发送验证码
    async onSendSms() {
      // 验证手机号格式
      try {
        await this.$refs.loginFromRef.validate('mobile')
      } catch (err) {
        return console.log(err)
      }
      // 验证通过 显示倒计时
      this.isCountDownShow = true
      // 发送验证码
      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        this.isCountDownShow = false
        if (err.response.status === 429) {
          this.$toast('发送太频繁了，请稍后重试')
        } else {
          this.$toast('发送失败，请稍后重试')
        }
      }
    },
  },
}
</script>
<style lang='less' scoped>
.login-container {
  .toutiao {
    font-size: 37px;
  }
}

.send-sms-btn {
  width: 160px;
  height: 46px;
  line-height: 46px;
  background-color: #ededed;
  font-size: 22px;
  color: #666;
}
.login-btn-wrap {
  padding: 53px 33px;
  .login-btn {
    background-color: #6db4fb;
    border: none;
  }
}
</style>
